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A151638 Number of permutations of 3 indistinguishable copies of 1..n with exactly 8 adjacent element pairs in decreasing order. 0
0, 243, 12750255, 40396577931, 41106807537048, 22745757394235250 (list; graph; refs; listen; history; internal format)
OFFSET

3,2

CROSSREFS

Sequence in context: A017429 A017561 A164657 * A051002 A044987 A201998

Adjacent sequences:  A151635 A151636 A151637 * A151639 A151640 A151641

KEYWORD

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net) May 29 2009

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Last modified February 14 18:47 EST 2012. Contains 205663 sequences.